Bushwalkers made the grisly discovery hiking through an area of scrub badly affected by bush fires on October 17.

The body was burnt beyond recognition and was only identified through DNA records.

Police believe the fire may have been deliberately lit to mask the crime.

Detectives are also investigating the possibility Alamri's death was linked to warring drug syndicates after another Saudi man was shot in the leg in a separate incident.

Two men with suspected links to an Asian crime gang were arrested over that attack.

Officers swooped on a Paradise Island address last night and maintained a police guard overnight.

Forensic officers and detectives arrived this morning, combing the scene for clues.

A police source said the occupants of the home were not suspected of having any involvement in Alamri's death, but a connection had been drawn to the case after officers followed a number of lines of inquiry.

None of the residents have been arrested and the investigation remains ongoing.